Mesh can also be used to bridge two Layer 2 Networks.
This is a normal Installation from Ruckus Guides.
In my Case Mesh is not for redundancy.
In my Case i have multible Root-APs mounted at a Building.
Over a big parking area there a multible Mesh-APs who has a IP-Camera attached.
So yes, my Mesh-APs are basicly connected with a wire but only connected to a IP-Camera. So Mesh is needed to get a connection to my Root-APs at the Building where the Server Infrastructure resides.